Modification of helical field configuration cased by plasma

2009 Fiscal Year Final Research Report

• Project/Area Number: 19560827
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: Kyoto University
• Principal Investigator: MIZUUCHI Tohru Kyoto University, エネルギー理工学研究所, 教授 (20135619)
• Co-Investigator(Kenkyū-buntansha): OKADA Hiroyuki 京都大学, エネルギー理工学研究所, 准教授 (50169116) ; KOBAYASHI Shinji 京都大学, エネルギー理工学研究所, 助教 (70346055)
• Project Period (FY): 2007 – 2009
• Keywords: 磁場核融合 / ヘリカル系磁場 / 非誘導電流 / 回転変換 / ダイバータ / 磁気島

Research Abstract

Spontaneous modification of magnetic field configuration from a vacuum one in a helical system caused by plasma pressure and/or plasma current produced by non-inductive plasma heating is experimentally studied in the Heliotron J device. The effects on the position of divertor plasma legs and the edge rotational transform are examined and clearly shown by experiments. The former is important to design and control the divertor heat/particle road. The latter seems to be related to H-mode transition.

Research Products

• [Journal Article] Configuration control experiments in Heliotron J (2009)
  • Author(s): T. Mizuuchi, S. Kobayashi, S. Yamamoto, H. Okada, K. Nagasaki, G. Motojima, S. Watanabe, A. Matsuyama, Y. Nakamura, K. Hanatani, K. Kondo, F. Sano, Heliotron J Group
  • Journal Title: Journal of Plasma Fusion Research SERIES Vol.8 Pages: 981-986
  • Peer Reviewed
• [Journal Article] Experimental Study of Non-Inductive Current in Heliotron J (2009)
  • Author(s): G. Motojima, K. Nagasaki, H. Okada, K. Watanabe, T. Mizuuchi, A. Matsuyama, K. Hanatani, S. Yamamoto, S. Kobayashi, Y. Suzuki, K. Kondo, Y. Nakamura, Angela C. FERNANDEZ, Alvaro A. CAPPA, Y. Yoshimura, S. Watanabe, K. Mukai, F. Sano
  • Journal Title: Journal of Plasma Fusion Research SERIES Vol.8 Pages: 1010-1014
  • Peer Reviewed
• [Journal Article] Comparison of edge plasma behavior at different poloidal positions in Heliotron J (2009)
  • Author(s): T. Mizuuchi, K. Murai, S. Watanabe, S. Yamamoto, S. Kobayashi, K. Nagasaki, H. Okada, G. Motojima, H. Arimoto, F. Hamagami, D. Katayama, H. Matsuoka, A. Nakajima, H. Takahashi, H. Yasuda, K. Mukai, Y. Kowada, K. Hosaka, S. Mihara, N. Nishino, Y. Nakashima, Y. Nakamura, K. HanatT. Mizuuchi, K. Murai
  • Journal Title: Journal of Nuclear Materials 390-391 Pages: 428-431
  • Peer Reviewed
• [Journal Article] Configuration Control Studies in Heliotron J (2008)
  • Author(s): T. Mizuuchi, S. Kobayashi, S. Yamamoto, H. Okada, K. Nagasaki, G. Motojima, S. Watanabe, H. Arimoto, K. Murai, F. Hamagami, D. Katayama, H. Matsuoka, A. Nakajima, H. Takahashi, H. Yasuda, K. Mukai, A. Matsuyama, Y. Kowada, K. Hosaka, S. Mihara, N. Nishino, T. Minami, Y. Nakash T. Mizuuchi, S. Kobayashi, S. Yamamoto, H. Okada, K. Nagasaki, G. Motojima, S. Watanabe, H. Arimoto, K. Murai
  • Journal Title: American Institute of Physics Conf. Proc. 996 Pages: 259-268
  • Peer Reviewed
• [Journal Article] Effect of Toroidal Current on Rotational Transform Profile by MHD Activity Measurement in Heliotron J (2008)
  • Author(s): G. Motojima, S. Yamamoto, H. Okada, S. Sakakibara, K. Watanabe, K. Nagasaki, Y. Suzuki, T. Mizuuchi, S. Kobayashi, B.D. Blackwell, Y. Nakamura, K. Kondo, K. Hanatani, H. Arimoto, S. Watanabe, F. Sano
  • Journal Title: Plasma and Fusion Research 3 Pages: s1067
  • Peer Reviewed
• [Journal Article] Spontaneous shift of divertor plasma footprints during a discharge in a helical-axis heliotron device (2007)
  • Author(s): T. Mizuuchi, H. Nagata, H. Okada, G. Motojima, S. Kobayashi, K. Nagasaki, Z. Feng, N. Nishino, Y. Suzuki, M. Yokoyama, Y. Nakamura, S. Yamamoto, S. Watanabe, H. Arimoto, S. Matsuoka, M. Nosaku, T. Tomokiyo, N. Watanabe, K. Hanatani, K. Kondo, F. Sano
  • Journal Title: Nucl. Fusion 47 Pages: 395-402
  • Peer Reviewed
• [Presentation] Development of magnetic island detector by magnetic measurement in helical plasmas (2009)
  • Author(s): S. Yamamoto, H. Okada, S. Sakakibara, Y. Suzuki, S. Kobayashi, T. Minami, T. Mizuuchi, K. Mukai, K. Nagasaki, Y. Nakamura, Y. Narushima, F. Sano, K.Y. Watanabe
  • Organizer: 19th International Toki Conference (ITC19)
  • Place of Presentation: 土岐
  • Year and Date: 2009-12-08
• [Presentation] 磁気計測による磁気島検出器の開発 (2009)
  • Author(s): 岡田浩之、山本聡、榊原悟、鈴木康浩、小林進二、長崎百伸、中村祐司、南貴司、水内亨、木島滋、渡邊清政、成嶋吉郎、向井清史、岸真太郎、李〓庸、高畠優、南桂史、佐野史道
  • Organizer: 第26回プラズマ・核融合学会年会
  • Place of Presentation: 京都
  • Year and Date: 2009-12-04
• [Presentation] Energetic particle transport in NBI plasmas of Heliotron J (2009)
  • Author(s): S. Kobayashi, K. Nagaoka, S. Yamamoto, T. Mizuuchi, K. Nagasaki, H. Okada, T. Minami, S. Murakami, H.Y. Lee, Y. Suzuki, Y. Nakamura, Y. Takeiri, M. Yokoyama, K. Hanatani, K. Hosaka, S. Konoshima, S. Ohshima, K. Toushi, F. Sano
  • Organizer: 17th International Stellarator Workshop/Heliotron Workshop
  • Place of Presentation: プリンストン
  • Year and Date: 2009-10-18
• [Presentation] Study of Improved Confinement Modes in Heliotron J (2009)
  • Author(s): T. Mizuuchi, F. Sano, K. Nagasaki, H. Okada, T. Minami, S. Kobayashi, S. Yamamoto, S. Konoshima, K. Hanatani, Y. Nakamura, K. Mukai, S. Kishi, H.Y. Lee, K. Minami, Y. Takabatake, N. Nishino, Y Nakashima, Y. Suzuki, M. Yokoyama
  • Organizer: 17th International Stellarator Workshop/Heliotron Workshop
  • Place of Presentation: プリンストン
  • Year and Date: 2009-10-15
• [Presentation] Recent Progress in Heliotron J Experiments for Exploration of the Helical-Axis Heliotron Concept (2008)
  • Author(s): T. Mizuuchi, S. Kobayashi, H. Okada, K. Nagasaki, S. Yamamoto, G. Motojima, S. Watanabe, K. Mukai, K. Hosaka, Y. Kowada, S. Mihara, H. Lee, Y. Takabatake, A. Matsuyama, Y. Nakamura, K. Hanatani, Y. Suzuki, S. Konoshima, K. Kondo, F. Sano
  • Organizer: JSPS-CAS Core Universit Program Seminar on Production and Control of High Performance Plasmas with Advanced Plasma Heating and Diagnostic systems
  • Place of Presentation: 麗江
  • Year and Date: 2008-11-05
• [Presentation] Configuration control experiments in Heliotron J (2008)
  • Author(s): T. Mizuuchi, S. Kobayashi, S. Yamamoto, H. Okada, K. Nagasaki, G. Motojima, S. Watanabe, A. Matsuyama, Y. Nakamura, K. Hanatani, K. Kondo, F. Sano, Heliotron J Group
  • Organizer: International Congress Plasma Physics 2008
  • Place of Presentation: 福岡
  • Year and Date: 2008-09-08
• [Presentation] Similarity and difference in edge plasma behavior observed at different poloidal positions in Heliotron J (2008)
  • Author(s): T. Mizuuchi, K. Murai, S. Watanabe, S. Yamamoto, S. Kobayashi, K. Nagasaki, H. Okada, G. Motojima, H. Arimoto, F. Hamagami, D. Katayama, H. Matsuoka, A. Nakajima, . Takahashi, H. Yasuda, K. Mukai, Y. Kowada, K. Hosaka, S. Mihara, N. Nishino, Y. Nakashima, Y. Suzuki, Y. Nakamura, K. Hanatani, K. Kondo, F. Sano
  • Organizer: 18th International Conference on Plasma Surface Interactions
  • Place of Presentation: トレド
  • Year and Date: 2008-05-29
• [Presentation] Studies of Configuration Control Effects on Dynamic Behavior of Heliotron J Plasmas (2007)
  • Author(s): T. Mizuuchi, S. Kobayashi, S. Yamamoto, H. Okada, K. Nagasaki, G. Motojima, S. Watanabe, H. Arimoto, K. Murai, F. Hamagami, D. Katayama, H. Matsuoka, A. Nakajima, H. Takahashi, H. Yasuda, K. Mukai, A. Matsuyama, N. Nishino, T. Minami, Y. Nakashima, T. Mutoh, Y. Suzuki, S. Murakami, K.Y. Watanabe, M. Yokoyama, Y. Nakamura, K. Hanatani, K. Kondo, S. Okamura, F. Sano
  • Organizer: Joint Conference of 17th International Toki Conference on Physics of Flows and Turbulence in Plasmas and 17th International Stellarator/Heliotron Workshop
  • Place of Presentation: 土岐
  • Year and Date: 2007-10-16
• [Presentation] Study of spontaneous transition by toroidal current control in a low magnetic shear helical device (2007)
  • Author(s): S. Kobayashi
  • Organizer: 11th IAEA Technical Meeting on H-mode Physics and Transport Barriers
  • Place of Presentation: つくば
  • Year and Date: 2007-09-27